The Elect of God will believe the Truth in God's Time, Acts 13:48
48And when the Gentiles heard this, they were glad, and glorified the word of the Lord: and as many as were ordained to eternal life believed.
This has to do with the Faith of God's Elect and the promise of Eternal Life before the world began Titus 1:1-2
1Paul, a servant of God, and an apostle of Jesus Christ, according to the faith of God's elect, and the acknowledging of the truth which is after godliness;
2In hope of eternal life, which God, that cannot lie, promised before the world began;
So these Gentiles were some of those who had a promise of Eternal Life before the world began.
And quite frankly some who Jesus had in mind when He said this Jn 10:16
And other sheep I have, which are not of this fold: them also I must bring, and they shall hear my voice; and there shall be one fold, and one shepherd.
The Other Sheep are gentiles, like the ones in Acts 13:48 !
This scripture proves that all of God's Elect shall believe the Truth of the Gospel, and I am talking the True Gospel, consisting of Tulip Truth !